Pile wire for looms



Feb I7. 1925.

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Patented Feb. 17, 1925.

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PILE WIRE ron Looms.

Appiia'tion tied-January 1e, 1924. serial N01 s863478.

To asZZ whom; t may concern.'

Be it known that 1,MA'no`Us B. BEHRMAN, a citizen of the United States, and a resident of lBrooklyn, in the county. of` Kings and State of New .'Yol'k, have invented certain new and useful Improvements in Pile iVires fOrLOOmS, of whichjthe4 following is a specification.

The invention relates'to the class oflooms for weaving'pile fabrics, andit consists in a novel'construetion of' the pile wires ernplyoyed in such 'looinsforcutting the pile, it being commonly; known that the wires are madeuse of in agroup and aresuccessively inserted into and-.withdrawnfrom theshed of the" fabric. Each wire carries atA one of its ends a blade or cutter, which when drawn through the pile-loops oriloats formed from the warp threads, severs or cuts the same to form the pile.

The pile wires of my invention are applicable to existing looms, and hence my invention, while` relating to looms, consists primarily inthe wires operating -in a.` custernary manner and yby the usual means, but possessing novelty' in respect to that portion thereof directly carrying the blade for cutting the pile.

ln accordance withiny' invention: the pile wire is specially constructed at itsN forward endte form a holder adapted to detaehably receive Vand securely hold asmall flat steel blade orcutter, and said 'blade or cutter is Lof `specialconstructionadapting it to said holder and to cooperate with the blade-securing features thereof, oneof said features, in the preferred construction, being a durable transverse cross-pin or abutment which theblade or cutter, at an' upwardly extending slot or 'recess therein, straddles, and another of said features being a pivoted latchcarried by the holder and adapted to be engaged with/the 'outer end of the blade or cutter for latching or locking the blade inl irrn position.

The invention willv be fully understood from' the detailed description hereinafter presented, reference being had to the accompanying drawings, in which: n I

Fig. l is a side elevation, on an enlarged scale, of a portion of a pile' wire embodying my invention, then blade or cutter being shown in j-itsgoperative position within the holderV provided at the forward end of the wire;

Fig. 2 is a vertical longitudinal section through a portionof thesaine, thesection being taken on the dotted line 24-2'of'li`ig. 3 and the latch for the blade b eiiag shown in inoperative position or Yfree offthe blade; Fig. 2 may be regarded as illustrating@the introductory position ofljlieblade in the h o-lder preparatory to being latched or locked therein or the release of `the latching or locking means from ftheQblade' 'preparatory to the withdrawal of the blade from the holder; y

'F ig. 3 is a top plan view, on 4alarger scale, of the pile wire, with the bl'adeshown as latehed or locked in its `operative position;

Fig. l is an enlarged see-tional view taken on the dot-ted line li-4 of Fig. l;

Fig. 5 is a like vien" tahen on the dotted line 5 5 of F ig. l;

Fig. G is a verticalA section taken on the dotted line G of Fig. i2;

Fig. 7 is a sidefelevation. corresponding with F ig. l, showing aonddilied construction of pile wire embodying` features of my invention, and A Fig. 8 is a sectional view, Correspendingl with Fig. 2, of the saine.

In the drawings l0 designates a pile wire and .pile cutter embodying atits forward end,`that being the left hand end looking at the drawings, the features of Inyinvention,`tl1e other portion of thewire 'being of usual or any suitable forniv and construction. The pile wire is usually a reasonably thin strip or bar of stoel andsoniewhat longer than the width of thefabricto be woven. Pile wires lare employed in groups and all the pile wires in afgi'oup are alike. I have therefore only shown one pile wire and the method of using the saine in a leoni requires no description.

On the forwardend of thewire 10 is a holder ll for the blade or cutter 12, said holder being of sheet metal and the blank therefor being bent or folded into approximately U-shape in cross section and lirazed at its inner end to the adjacent end of the body or rodl of the wire.

The holder ll is of special `construction and between its sid'e members 14, l5 is formed a narrow elongated recess4 or socket 1.6 to receive the body portion4 of the blade or cutter 12, the edge ofthelubase of the blade being straight and 'seated "against the upper surface of the bottom 17 of the ref cess or socket 16 and the cutting edge of the blade being exposed above said holder. The side members 14, 15 match each other except at their outer ends beyo-nd the blade flush therewith. The cross-pin or abutment 18 lis denitely positioned with relation to the proper location for the blade or cutter in the holder, and said blade or cutter is formed with an upwardly extending recess or slot19 (Fig. 2) to pass downwardly over said pin or abutment when the blade is introduced into the holder, said recess or slot preferably having its edge 2O inclined outwardly and its opposite edge 21 vertical, thereby providing the recess or slot with a wide open mouth to readily pass over the pin or abutment. The upper end of the ref cess or slot 19 closely engages the top and Vsidesof thev pin 18, so as to definitely position the blade and permit said pin to act as an abutment for the blade when pressure is exerted against the cutting edge of the same by the pile-loops through and against which the blade may be drawn.

The side member 14 of the holder is tormedat itsouter end with a wing 22 projecting'outwardly beyond the outer end of the blade 12, and the side member 15 is tormed atits outer end with a wing 23, whose outer extremity is deflected laterally to form the customary guard 24. Between the wings or extensions 22, 23 is mounted, on a transverse pivot pin 25, a latch 26 having a dog-arm 27 to engage the outer edge or the blade 12 near the upper end thereoic and a locking-arm 28 provided witha laterally extending stud 29 to enter a hole 3() in the wing 23 when said latch 26 is turned to operative position (Figs. 1 and 4). The wing 23 may be flexed suliiciently to permit the stud 29 to enter the hole 30 when the latch isturned to its operative position and to leave said hole when theplatch is turned to its inoperative position (Fig. 2) for the purpose of releasing the blade 12. r1`he end of thel dog-arm 27 is recessed, as at 31, to straddle the edge of the blade 12. as shown in Fig. 5, and thereby not only effect a irm engagement of said arm with the blade but enable the arm to resist any tendency to lateral deection in the upper outer end of the blade when the device is in use.

The pivot pin125 is upset or headed in the wings 22, 23 and firmly connect said wings.

The blade 12 has a straight lower edge, a downwardly and inwardly inclined upper cutting edge and, usually, a downwardly and outwardly extending curved outer edge, as shown in Fig. 2, and, in addition, said blade contains the recess or slot 19 extending` upwardly through its lower edge to engage the pin or abutment 18, which in'coopera tion with the walls of said recess, serves to correctly locate the blade in the holder and resist longitudinal sliding movement of the blade in either direction.

ln assembling the blade or cutter 12 with the holder 11, the latch 26 will be turned to its inoperative position shown in Fig. 2, and the blade will then be introduced down-v wardly intothe holder, with the recess 19 straddling the pin 18, and thereupon the latch 26 will be turned to its operative position shown in Fig. 1, the dog-arm 27 then engaging the outer edge of the blade and the stud 29 o-n the locking-arm 28 being caught in the hole 30 and securing the latch in its operativeY position, with the dogarm Vfirmly pressing against the blade and binding the blade against the pin 18. `When it is desired to remove the blade from the holder the latch 26 will be turned to its inoperative po sition shown in Fig. 2 and the blade will plied to and removed from, the holder,l isv one of the desirable benets or' my invention. rlhe security with which the bladeY is held in the holder, is another off the desirable benelits of my invention. The dog-arm 27 acts to press the blade 12 downwardly Yinto the holder, as well as to perform its other duties hereinbefore referred to.

' In Figs. 7 and 8, l"` illustrate a modification ofsome of the features of my invention, and therein the holder 35 has side members 36, 37 Vand a bottom'38 and corresponds generally with the holder shown in Figs. 1 and 2. The side member 36 has at its outer end a wing or extension 39, and the side member 37 has at its outer end a. wing or extension 40 terminating in the usual guard 4l and containing the hole 42. The wings 39, 40 correspond generally with the wings 22, 23 of Figs. 1 and 2. The holder 35 does not possess the pin 18 shown in Fig. 2, and

the blade 43 is minus the recess 19 oi' the blade 12. The blade 43 is recessed down- Y vwing 40 and ycorresponding with the stud 29 shown in Fig. 4. ln the construction shown in Figs. 7 and 8 thelocking-arm 49 performs the same dutiesas the locking-arm 28 shown in Fig. 1, and the dog-arm 47 serves meats? at its rounded outer end to engage the blade 43 at the concave bottom oi the recess Llll therein and bind said blade against the upper surface of the bottom ot' the holder and also prevent said blade from having longitudinal movement in the holder, said arm 47 in this latter respect constituting an abutment and positioning the blade and performing some of the duties ot the cross-pin 18 of Fig. 2.

I do not contine my invention tothe shapes of the holder, blade and latch hereinbeit'ore specifically described, since these details may be changed or modified within the scope ot the appended claims. l have shown and described two very desirable embodiments ot' my invention possessing in many respects like characteristics ot' efficiency and conw venience in construction, assembly and disassembly.

lVhat I claim as my invention and desire to secure by Letters Patent, is:

l. For use in looms for weaving pile-tabrics, a pile-wire having' on one end a holder which is approximately of U-.shape in cross-section and has a bottom and side members forming a blade-receiving recess, a blade seated in said recess with its cutting edge exposed above the same, a latch-lever pivoted between portions of said side members and having a dog-arm to engage the outer end portion o't` said blade and means tor releasably locking said lever in its operative position.

2. A pile-wire as claimed in claim l, in which the means for releasably locking the latch-lever in operative position consist of a locking arm on said lever having at one side thereof a stud and a hole in the adjacent side member to receive said stud.

3. A pileWire as claimed in claim l, in which said side members have wings extending outwardly beyond the outer end ot the blade to receive the pivot for said latchlever and in which one of said wings extends beyond the other wing and is deflected laterally to form a guard.

e. A pile-wire as claimed in claim l, in which said side members have wings extending outwardly beyond the outer end oit' the blade to receive the pivot tor the latchlever, one of said wings extending beyondthe other and containing a hole, and in which the latch-lever has a locking-arm carrying a stud to enter and interlock with said hole, said hole and locking arm constituting the means for releasably locking the latch-lever in its operative position.

5. A pile-wire as claimed in claim l, in which there is also embodied means serving as an abutment itor resisting longitudinal movement ot the blade.

6. A pile-wire as claimed in claim l, in which the engaging end ot' said dog-arm is recessed to straddle the edge of the blade.

T. it. pilewire as claimed in claim l, in which the holder has a transverse abutment and the blade a recess to pass downwardly upon and closely engage said abutment, thereby to resist force tending' to slide t-he blade longitudinally.

8. A pile-wire as claimed in claim l, in which said side members are connected by a transverse pin and in which the blade has a recess to pass upon and closely engage said pin as an abutment to resist longitudinal movement o't' the blade.

S). For use in looms tor weaving pile-fabrics, a pile-wire having on one end a holder which is approximately oit' U-shape in crossscction and has a bottom and side members forming a blade-receiving recess, a blade seated in said recess having a straight lower edge, a downwardly and inwardly inclined cutting edge and a downwardly and outwardly extending outer edge, said side inembers at their upper edges inclining down wardly and inwardly below said cutting edge, a latch adapted to engage the outer edge ot the blade for securing said blade and means for releasably locking said latch in operative position.

l0. l pile-wire as claimed in claim 9, in which the holder has a transverse abutment and said blade an upwardly extending recess to pass upon and closely engage said abutment, thereby to resist torce tending to slide the blade longitudinally.

ll. A pile-wire as claimed in claim 9, in which the latch is pivotally mounted and has a locking arm connected therewith, and in which said arm carries a locking stud and one oif said side members has a hole to receive said stud when the latch is in operative position, said arm, stud and hole constituting the means :t'or releasably locking the latch in operative position.

Signed at New York city, iu the county oi N ew York and State ot' `blew York, this l-ilth day of January, A. D. 1924.

MARCUS B. BEHRMAN. 

